yum -y install epel-release
pip3 uninstall psycopg2
sudo yum install postgresql-devel -y
yum install gcc libffi-devel python3-devel openssl-devel -y
pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple psycopg2
pip3 install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple
